I'm a student and my summer project involves taking a lot of GEO tagged photos - I have a good budget for it, so i need to find the optimal solution to do it. Basically, i'm going to map some plants and rocks positioned every 1-4 meters from each other.

Every day i'm going to make 1000 photos and i need them to be geotagged with the highest possible accuracy. So I looked at several options, but would really appreciate your expertise.

PRESS of ONE BUTTON (no post processing)

Option 1: built in gps cameras

try 1: Lumix TZ 20 with built in gps

The problem here was that the camera is for tourists so the GPS is slow to update (every N minutes).To get the current lock one needs to wait 1-3 minutes which means that i need to relock and wait 1-3 minutes after i move to a new position (plant/rock).

try 2: reading on this site i found that Sony has a camera with built in gps and it has the same problem

Option 2: External GPS attached by cable

Try 1: Nikon d3100

Nikon cameras have special GPS slot t connect new Nikon gps device - which costs almost as much as the camera

some 3rd part gps are available, but i don't know the accuracy. (advice appreciated)

Garmin eTrex H could be attached too - and my intuition hints that this would give me the best accuracy

Hi Welcome. Where are you based?How good do the pictures need to be?Have you seen mapping software that they use when going out in the bush that uses build in maps?

I am thinking that using a camera with gps is the wrong approach, I would be looking at a gps and mapping software.Have a look at this website, they have maps for various countries. http://www.oziexplorer.com/

I have a unit that I use in the car when we go into the bush that runs detailed maps on fourwheel drive tracks and others.

Thanks a lot, I'll need some mapping solutions too. Do you by any chance know any good cartography software?

regarding geotagged photos. I'll try the new Garmin eTrex 10 (GPS+GLONASS) to collect waypoints every 2 seconds. Then I'll take all the photos. And then will postprocess the photos in a geotagging software. Will let you know how it worked at the end.

Also if anyone knows a good geotagging software that works with eTrex files please let me know...